C# Facebook and Telegram API

I am looking for any solution that can give me my feeds-related data from the Facebook Groups and Telegram Groups I am a member of. So, if I am a member of the Facebook group ABC, I want to get every post in my application. If any member of XYZ posts something, I want to get that post in my application. You can try to fetch the notifications or any other method.

Please note I am just a member of the group, not an admin.
C# is a must; it can be a console application.

I need below data:
Group Name, Link to the post(Must), Content of the Post(Must)

Note: Do not forget to check the attached file.